Waterproof paint



' Patented-June 15, 1928, p

UNITED -lST A cnmnns NORMAN ExLEY, or cenaseow sco DOUGALD McTAGGAR'IAND WILLIAM NEILS N Drawing.

. Thisinvention relates to waterproof warnnrn'oor PAINT.

Application me m 27, 1926. Serial No. 112,176.

paints, and its object is to provide a paint of this kind havingimproved waterproof,

and preservative propertiesand more lasting uniformity of composition.

According to the present invention, a

waterproof pa in't comprises, in combination,

sodium resinate solution, apigment or pigments of which the propertiesare such as I not to precipitate the sodium resinate, raw

0 I I v I'OSlIl or a solution thereof in turpentine or other solvent,

mixed with one another in such asto. form an emulsion, sary, a colloidalsubstance-may and a quantity of water, all

into whic if 'neces be introduced not required,

the vplgment mixing readily into the emulsion without auxiliary means.

For ochre an d sienna pigments, however,

and for pigments comprising kieselguhr or lithopone,

employed, to

- emulsion from separating out a colloidal substance hastobe keep theconstituents of the on standing.

- A colloid suitable for'the aforesaid purpose is casein, which is alsoobtainable conveniently.

The following proportions are given by wayof example of what I havefound suit able in practi paint:

'ce for a white (lithopone) roportion L and to 100 parts of thi fromabout 1 part to such as casein.

It is to be unde By weight:

Pigment (lithopone) Sodium resinate solution Rawrosin Turpentine iVateri TEs PATENT OFFICE.

TLAND, ASSIGNOR or 'r 0N, no'rnpr enaseow, SCOTLAND.

WO-THIBDS mo Per cent. 60 6 9 7 s composition we add 5 'parts of acolloid rstood that I do not confine myself to these proportions astheymay be varied more or less to suit requirements.

The waterproof fore described retains 1 aint made as hereinbets initialuniformity of composition although stored away for considerable,periods, and, at the same time, is such that it'can be applied. inaccordance ,with any esses, as, for example, or by spray devices.

Having now fully described what I claim and desire to se ure by- Let:

ters Patent is i A waterproof paint co'mpn y invention of the commonlyaccepted procby means ofbrushes sing, by weight,

(15 parts-of "sodium resinate soap, 60-jparts of opone, pentine and 18one another in. such proportion as .to form an emulsion. In test 0whereof I aflix milsi 1m .11 cniuiLEs NORMAN 9 parts of raw rosin,7,,partsuturi" I parts water, all, mixed with nature.

